Rubric Capital Management LP and David Rosen report beneficial ownership of MeiraGTx Holdings plc Ordinary Shares in an amended Schedule 13G. They report beneficial ownership of 9,100,000 Ordinary Shares, representing 9.83% of the class based on 92,609,516 Ordinary Shares outstanding as of May 8, 2026. All 9,100,000 shares are reported with shared voting and dispositive power and no sole power. Rubric Capital acts as investment adviser to certain funds and accounts that hold the shares, including Rubric Capital Master Fund LP, which has the right to receive dividends or sale proceeds from more than 5% of the Ordinary Shares. Rosen is identified in his capacity associated with Rubric Capital, and both reporting persons provide a New York business address.
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Key Figures
Shares beneficially owned:9,100,000 Ordinary SharesOwnership percentage:9.83%Shares outstanding:92,609,516 Ordinary Shares+3 more
6 metrics
Shares beneficially owned9,100,000 Ordinary SharesBeneficially owned by Rubric Capital and David Rosen
Ownership percentage9.83%Portion of MeiraGTx Ordinary Shares outstanding
Shares outstanding92,609,516 Ordinary SharesOutstanding as of May 8, 2026, per Form 10-Q
Shared voting power9,100,000Shares with shared power to vote or direct the vote
Shared dispositive power9,100,000Shares with shared power to dispose or direct disposition
Filing date08/14/2026Signature date for the reporting persons
"the beneficial owner of the Shares reported herein"
A beneficial owner is the person who ultimately owns or controls a financial asset or property, even if their name isn't directly on official documents. Think of it like someone who secretly holds the keys to a safe deposit box—others may appear to have access, but the true owner is the one who benefits from what's inside. Identifying beneficial owners helps ensure transparency and prevent illegal activities like money laundering or fraud.
shared voting powerfinancial
"Shared Voting Power 9,100,000.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
shared dispositive powerfinancial
"Shared Dispositive Power 9,100,000.00"
investment adviserfinancial
"Rubric Capital, the investment adviser to certain investment funds"
An investment adviser is a person or firm that professionally manages money and gives recommendations about buying, selling, or holding investments. Like a financial coach or guide, they have a legal duty to act in a client's best financial interest, so their advice, fees and potential conflicts can directly affect returns and risk — making their role important for investors who want informed, accountable help with portfolios.
percent of classfinancial
"Percent of class: 9.83 %"
Percent of class is the portion of a specific category of securities—such as a company’s common shares, preferred shares, or a bond series—that takes part in or approves a corporate action (vote, consent, tender, etc.). Investors watch this number because it reveals how much support or opposition exists within that particular shareholder group; like counting how many members of a club back a proposal, it can determine whether a plan passes or how influence is distributed.
FAQ
What percentage of MeiraGTx (MGTX) does Rubric Capital report owning?
Rubric Capital and David Rosen report beneficial ownership of 9.83% of MeiraGTx Holdings plc Ordinary Shares. This percentage is based on 92,609,516 shares outstanding as of May 8, 2026, as disclosed in the company’s Form 10-Q.
How many MeiraGTx (MGTX) shares does Rubric Capital report in this Schedule 13G/A?
The reporting persons disclose beneficial ownership of 9,100,000 Ordinary Shares of MeiraGTx Holdings plc. These shares are held on behalf of certain Rubric-managed funds and accounts, with shared voting and dispositive power over the position.
What is the basis for Rubric Capital’s ownership percentage in MeiraGTx (MGTX)?
The 9.83% ownership figure is calculated using 92,609,516 Ordinary Shares outstanding as of May 8, 2026. That outstanding share count is referenced from MeiraGTx’s Form 10-Q for the quarter ended March 31, 2026.
Who has the economic interest in more than 5% of MeiraGTx (MGTX) shares reported here?
The filing states Rubric Capital Master Fund LP has the right to receive or direct the receipt of dividends or sale proceeds from more than 5% of MeiraGTx’s Ordinary Shares. Rubric Capital acts as investment adviser to this fund.
Do Rubric Capital and David Rosen have sole or shared voting power over MeiraGTx (MGTX) shares?
They report 0 shares with sole voting or dispositive power and 9,100,000 shares with shared voting and shared dispositive power. This reflects control shared through Rubric-managed investment vehicles rather than individual sole authority.
What roles do Rubric Capital and David Rosen disclose in relation to MeiraGTx (MGTX) shares?
Rubric Capital is identified as investment adviser to funds and accounts holding MeiraGTx shares. David Rosen is described as Managing Member of Rubric Capital Management GP LLC, the general partner of Rubric Capital, and is a U.S. citizen.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
MeiraGTx Holdings plc
(Name of Issuer)
Ordinary Shares, $0.00003881 par value per share
(Title of Class of Securities)
G59665102
(CUSIP Number)
06/30/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
G59665102
1
Names of Reporting Persons
Rubric Capital Management LP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
9,100,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
9,100,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
9,100,000.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
9.83 %
12
Type of Reporting Person (See Instructions)
IA, PN
SCHEDULE 13G
CUSIP Number(s):
G59665102
1
Names of Reporting Persons
David Rosen
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
9,100,000.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
9,100,000.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
9,100,000.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
9.83 %
12
Type of Reporting Person (See Instructions)
HC, IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
MeiraGTx Holdings plc
(b)
Address of issuer's principal executive offices:
655 Third Avenue, Suite 1115, New York, NY 10017
Item 2.
(a)
Name of person filing:
This statement is filed by:
(i) Rubric Capital Management LP ("Rubric Capital"), the investment adviser to certain investment funds and/or accounts (collectively, the "Rubric Funds") that hold the shares of Ordinary Shares, $0.00003881 par value (the "Ordinary Shares") of MeiraGTx Holdings plc, a Cayman Islands exempted company (the "Issuer") reported herein; and
(ii) David Rosen ("Mr. Rosen"), Managing Member of Rubric Capital Management GP LLC, the general partner of Rubric Capital.
The foregoing persons are hereinafter sometimes collectively referred to as the "Reporting Persons."
The filing of this statement should not be construed as an admission that any of the forgoing persons or any Reporting Person is, for the purposes of Section 13 of the Act, the beneficial owner of the Shares reported herein.
(b)
Address or principal business office or, if none, residence:
The address of the principal business office of each of the Reporting Persons is 155 East 44th St, Suite 1630, New York, NY 10017.
(c)
Citizenship:
Rubric Capital is a Delaware limited partnership. Mr. Rosen is a citizen of the United States of America.
(d)
Title of class of securities:
Ordinary Shares, $0.00003881 par value per share
(e)
CUSIP No.:
G59665102
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
The information required by Items 4(a) - (c) is set forth in Rows 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
The percentage set forth in Row (11) of the cover page for each of the Reporting Persons and in Item 4(b) is based on 92,609,516 Ordinary Shares outstanding as of May 8, 2026, as reported in the Issuer's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2026 filed with the Securities and Exchange Commission on May 14, 2026.
(b)
Percent of class:
9.83 %
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(ii) Shared power to vote or to direct the vote:
The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iii) Sole power to dispose or to direct the disposition of:
The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
(iv) Shared power to dispose or to direct the disposition of:
The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for each of the Reporting Persons and is incorporated herein by reference.
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
See Item 2(a). Rubric Capital Master Fund LP, a Rubric Fund, has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, more than 5% of the Ordinary Shares.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
Not Applicable
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
